The Department of Defense drafted a specification for handling and recycling equipment. In this document, the recycling of magnetic media, such as your hard drive, is performed by writing a series of data patterns on the magnetic media rendering the data unrecoverable by conventional means. This is what SuperScrubber's and AutoScrubber's Military configuration does. The specification stipulates that magnetic media containing TOP SECRET data should be physically destroyed, however all classified and unclassified data on magnetic media can be sanitized using utilities such as SuperScrubber and AutoScrubber.